The U.S. Fish and Wildlife Service announced Friday that it will review whether Florida panthers are still an endangered species.

The review, a requirement of the Endangered Species Act, comes after a panther population rebound has led to growing calls from hunters and ranchers to take the big cats off the endangered species list.

Panther advocates have urged caution.

"The review is going to address a lot of speculation about the panther, its status, its health and its range," said Nancy Payton, a field representative for the Florida Wildlife Federation in Southwest Florida.

The Endangered Species Act requires that a species' status be reviewed every five years; the panther's last status review was announced in 2005. A decision to keep the panther's endangered status was announced in 2009.

"I think it's time (for a new review)," said Florida Fish and Wildlife Conservation Commissioner Liesa Priddy, an Immokalee rancher who drew criticism for a controversial memo that said Southwest Florida had reached its "carrying capacity" for panthers.

A later version of the memo, adopted by the Conservation Commission, called for the federal Fish and Wildlife Service to take the lead on recovery of Florida's iconic state animal.

Priddy said Friday she couldn't say whether panthers should qualify for downlisting.

"I think there's more evidence than there ever was before," she said. "That goes without saying."

As part of the status review, the Fish and Wildlife Service asked Friday that the public submit any new information about population trends, habitat conditions, threats and whether the panther still should be considered a separate subspecies.

The Florida Fish and Wildlife Conservation Commission has increased its estimate of the Florida panther population to as many as 230 adults, up from 180, most of them in Southwest Florida.

That is a rebound from as few as 30 panthers before a genetic restoration experiment brought in female Texas cougars to mix with the Florida population.

The current federal recovery plan for Florida panthers requires at least two breeding populations of 240 panthers each before the panther can be listed as threatened instead of endangered; three such populations are required before the panther can be taken off the list altogether. That plan also is under review.

Panther roadkills are reaching annual records, and reports of panthers preying on cattle and backyard livestock in Golden Gate Estates also are on the rise.

Earlier this year, females and kittens were seen for the first time since 1973 north of the Caloosahatchee River in Lee County, a long-awaited milestone for panther recovery.